Hi Hanso, I can't say as I personaly have never seen a Stagea at CRD.
Would also need to know more about what your issue is or what you looking to do and what you have. I count for a single opinion and there is many around about all Jap focused garages.
IMHO
It's about your Nissan Engine and/or Tune work you want done - CRD have alot of Skylines through their shop from RB20's through to RB26's and above ie: 2.8 and RB26/30, single and twin turbo's.
They appear to favour Haltech ECU's, use alot of Nitto stuff and Garret turbos but then again they will work with most other stuff too.
If your looking for just tuneing choose a shop that sells and tunes your type of aftermarket ECU and speak with others who have very recently used the shop your thinking of using. In my experience shops run hot and cold. Some shops are great and then get too much business or change mechs and it turns to custard quickly.
Steering/suspension locally - I wouldn't go pass Chris at Inline in Qbyn.
Local ACT shops
Trojan, Autotech, ESP appear to be the most used by the locals and they can fill you in on their experiences.
Most should or will PM you if you ask what they think about a shop. It's not good ettiquette to rag on a shop in an open forum and wont be tolerated by the Modertors (legal reasons). Plus some people have great experiences and others have $#!% experinces with the same place.
I use CRD as I have a Haltech and they rebuilt my engine.